BS EN IEC 62271-214:2019 High-voltage switchgear and controlgear. Internal arc classification for metal-enclosed pole-mounted switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
2019BS EN IEC 62271-214:2019 High-voltage switchgear and controlgear. Internal arc classification for metal-enclosed pole-mounted switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV